Water filter



FIG. 1 is a front view of a water filter embodying my design;

FIG. 2 is a rear view;

FIG. 3 is a side view, the other side corresponds;

FIG. 4 is a plan view;

FIG. 5 is a view from below; and,

FIG. 6 is a perspective view from front, above and side. 

The ornamental design for a water filter, as shown and described. 